A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Seabrook, TX
Seabrook homeowners call us when they need more livable space on a lot that already has a house, a garage, and often a view they don’t want to block. As an ADU company serving Seabrook, TX, we focus on accessory dwelling units, garage conversions, and home additions that fit the way this city actually builds: established neighborhoods, older homes, and lots shaped by water, wind, and decades of coastal weather. This page is your starting point for what ADU work costs here, what makes Seabrook jobs different, and which parts of town we serve. If you’re ready to talk numbers, call (361) 326-2313 for a free estimate.
Why Seabrook Homes Are Different
Seabrook sits on Galveston Bay, and that single fact shapes more ADU and addition decisions than almost anything else. Homes here deal with salt air, high humidity, and wind exposure that inland towns never think about. Framing, fasteners, and exterior materials have to be chosen for corrosion resistance, not just cost. We spec stainless or coated hardware on exterior connections and look hard at how moisture moves through a wall before we add square footage to it.
The housing stock is another driver. Much of Seabrook was built in the 1970s and 1980s, which means slab foundations, single-story layouts, and garages that were sized for one car and a lot of stuff. Garage conversions in Seabrook often start with questions about the slab: is it thick enough to become living space, does it slope the right way, and where does water run when it storms? These are real constraints, and they change what a conversion costs.
Permitting and HOA rules vary by neighborhood. Some communities here have specific language about ADUs and detached structures, and the city has its own setback and floodplain requirements depending on where a lot falls. We handle that on every job, but it means the smart move is to talk about your specific street early, before you fall in love with a floor plan that the lot won’t allow.
Our Main Seabrook Services
Most Seabrook homeowners come to us for one of three things: a garage conversion, a full ADU build, or a home addition. Each has its own Seabrook page with pricing, timelines, and local details.
Home Addition Contractor in Seabrook
A home addition in Seabrook means expanding a kitchen, adding a primary suite, or building out a living area without changing the character of the house. Coastal lots here are often tighter than they look on paper, so we focus on additions that work with the existing roofline and foundation instead of fighting them. The salt air and humidity shape our material choices on every exterior wall and tie-in. Russ Delmar leads our team through these projects with the same habit on every job: written price before work starts, a defined arrival window, and a written guarantee. Home Addition Contractor in Seabrook has the full breakdown.
Garage Conversion Contractor in Seabrook
Garage conversions are one of the most practical ways to add living space in Seabrook without giving up yard. Many garages here are attached and sized for older vehicles, which makes them good candidates for a studio, a guest suite, or a home office. The main technical concerns are the slab, the ceiling height, and how to route plumbing and HVAC into a space that was never meant to be lived in. We walk every conversion through the city’s requirements and make sure the work is permitted and inspected. Garage Conversion Contractor in Seabrook covers pricing and the process.
ADU Builders in Seabrook
An ADU, or accessory dwelling unit, is a small house on your larger property, which is exactly what our name means: a lodge is a small house on a larger property. In Seabrook, ADUs work for aging parents, adult kids, rental income, or just a quiet workspace away from the main house. We match the right approach and materials to your lot, whether that’s a panelized build, a manufactured ADU from a partner like Boxabl or Plant Prefab, or stick-built framing. Every ADU in Seabrook gets the same written guarantee and the 365-Day Done Right Promise. ADU Builders in Seabrook has the full Seabrook ADU picture.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Seabrook
We work regularly with several ADU and structure brands in Seabrook, including Boxabl, Plant Prefab, and Tuff Shed. Depending on what you’re building, parts and panels are typically ordered in the first phase of the project and staged locally before construction starts. For more on what we service and stock, see our brands.
Pricing for ADU Company in Seabrook, TX
| Service | Typical range in Seabrook |
|---|---|
| Detached ADU build (turnkey) | $180,000 – $350,000+ |
| Garage conversion (attached, finished) | $70,000 – $120,000 |
| Garage conversion (detached) | $90,000 – $150,000 |
| Home addition (single room) | $60,000 – $110,000 |
| Primary suite addition | $80,000 – $150,000 |
| Kitchen addition | $60,000 – $130,000 |
| Second-story addition | $150,000 – $300,000+ |
| Site prep, foundation, and utilities | $15,000 – $45,000 |
| Design and permitting | $8,000 – $25,000 |
| Finish work (flooring, paint, trim) | $10,000 – $35,000 |
What pushes a Seabrook ADU toward the top of these ranges is usually the lot: floodplain elevation, extra piers or foundation work, tree removal, and setbacks that force a custom footprint instead of a standard plan. The other driver is material choice, especially when coastal corrosion resistance matters for anything exterior. Whatever the final number is, you’ll see it in writing before any work starts. No price changes at the door, no vague allowances, no “we’ll figure it out later.”
Neighborhoods We Serve in Seabrook
We work across Seabrook, from the older streets near the bay to the newer subdivisions further inland. Most of our estimates happen within a day or two of the first call, and scheduling depends on the current project load and the scope of your build.
- Old Seabrook
- El Lago
- Taylor Lake
- The Gardens
- Baybrook
Service Area – Cities Near Seabrook
If you’re just outside Seabrook, we also take on projects in nearby communities along the bay and the surrounding area. You can find our city pages for Deer Park, TX, Dickinson, TX, Friendswood, TX, and Santa Fe, TX for pricing and details specific to those areas.
Serving Seabrook, TX - Our Local Coverage Area
We’re based in the Seabrook area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Seabrook
Most Seabrook homeowners get an estimate visit scheduled within one to two business days of calling. The estimate itself is free, and you’ll get a written price during that visit, not a week later.
Yes. We prepare and submit the permit package for your Seabrook project and work with the city through inspections. HOA approvals, when your neighborhood requires them, are handled in the same phase of the project so nothing stalls once construction starts. Call (361) 326-2313 and we’ll check the specific requirements for your street.
Every Seabrook job comes with the 365-Day Done Right Promise: if the work isn’t right, we come back and make it right, covered by a written guarantee you get before construction begins. The written price, the arrival window, and the guarantee are all on paper, not just talked about.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Seabrook Customers Say
"Converted our garage into a rental studio. The crew was respectful of the neighbors and kept the site clean. It's bringing in rent now and paid for itself faster than I expected."
- Grace Yoon"The ADU came out beautiful and the permitting, which terrified me, was handled start to finish. They kept me updated every week so I was never wondering what was happening."
- Shauna Mills"Added a suite for my dad. They walked us through every cost before a hammer swung and stuck to it. The written price is what we paid, no change orders."
- Ingrid Salazar
